[QUOTE=Cotsey;253073]I currently have ZCS 8.0.1 FOSS installed on Ubuntu 12.04.1 LTS on a Virtualbox VM for testing, I've allocated 4GB of RAM and two CPU cores.[/QUOTE}That should be more than enough ofr a production server with that number of users. Depending on how many cores your server has you (probably) won't need two dedicated to ZCS, check the wiki document on Tuning for a Virtual environment for details.